@book{7941,
	author = {O'Brien, James A.,},
	title = {Introduction to information systems /},
	publisher = {McGraw-Hill/Irwin,},
	year = {c2005.},
	address = {Boston :},
	edition = {12th ed.},
	note = {"Registration code" inserted.},
	url = {http://www.loc.gov/catdir/toc/mh041/2003116665.html}
}